Deployment fails on Google app engine

I have a java application (spring mvc, jpa) and i am trying to deploy it on google app engine. For some reason I get the following error when deployment is done

........................ 20% Scanning files on local disk. 25% Initiating update.

Error Details: Feb 26, 2011 10:43:58 AM org.apache.jasper.JspC processFile INFO: Built File: \about.jsp Feb 26, 2011 10:45:41 AM org.apache.jasper.JspC processFile INFO: Built File: \faq.jsp Feb 26, 2011 10:47:23 AM org.apache.jasper.JspC processFile INFO: Built File: \footer.jsp Feb 26, 2011 10:49:05 AM org.apache.jasper.JspC processFile INFO: Built File: \synchronize.jsp

java.io.IOException: Error posting to URL: https://appengine.google.com/api/appversion/create?app_id=subsconvertor&version=0.1& 500 Internal Server Error

Server Error (500) A server error has occurred.

Please see the logs [C:\Users\CRISTI~1.POP\AppData\Local\Temp\appcfg6738798550184437418.log] for further information.

And int he log I have:

Server Error (500) A server error has occurred.

at com.google.appengine.tools.admin.Se开发者_如何学编程rverConnection.send(ServerConnection.java:149)
at com.google.appengine.tools.admin.ServerConnection.post(ServerConnection.java:82)
at com.google.appengine.tools.admin.AppVersionUpload.send(AppVersionUpload.java:579)
at com.google.appengine.tools.admin.AppVersionUpload.beginTransaction(AppVersionUpload.java:397)
at com.google.appengine.tools.admin.AppVersionUpload.doUpload(AppVersionUpload.java:112)
at com.google.appengine.tools.admin.AppAdminImpl.update(AppAdminImpl.java:56)
at com.google.appengine.tools.admin.AppCfg$UpdateAction.execute(AppCfg.java:547)
at com.google.appengine.tools.admin.AppCfg.<init>(AppCfg.java:138)
at com.google.appengine.tools.admin.AppCfg.<init>(AppCfg.java:61)
at com.google.appengine.tools.admin.AppCfg.main(AppCfg.java:57)

com.google.appengine.tools.admin.AdminException: Unable to update app: Error posting to URL: https://appengine.google.com/api/appversion/create?app_id=subsconvertor&version=0.1& 500 Internal Server Error

Any idea what can be wrong?

Cheers, Cristian

It's possible that the '.' in your version number is mucking things up.

The version identifier can only contain "letters, digits, and hyphens" (from google documentation).